A detailed, systematic petrographic survey of all (189) Ca, Al‐rich and olivine‐rich inclusions larger than ∼0.2 mm in diameter in 17 thin sections of Allende was performed by optical and scanning electron microscopy. Most of these inclusions are aggregates
Krot, Alexander N. and Nagashima, Kazuhide and Wasserburg, Gerald J. and Huss, Gary R. and Papanastassiou, Dimitri A. and Davis, Andrew M. and Hutcheon, Ian D. and Bizzarro, Martin (2014) Calcium-aluminum-rich inclusions with fractionation and unknown nuclear effects (FUN CAIs): I. Mineralogy, petrology, and oxygen isotopic compositions.
15/10/2015· High-precision stable Ba isotope ratios are reported in a variety of terrestrial samples, undifferentiated primitive meteorites, and calcium–aluminum-rich inclusions (CAIs) from the Allende chondrite. All whole-rock terrestrial and meteorite samples are isotopically
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract. Calcium-aluminum-rich inclusions (CAIs) preserve a record of events in the earliest solar system, the timing of these events and the conditions under which they occurred.
A method for the precise and accurate determination of the tellurium (Te) isotope compositions of calcium-aluminum-rich inclusions (CAIs) has been developed. The technique utilizes multiple-collector inductively coupled plasma-mass spectrometry (MC-ICPMS) with
Type B calcium-aluminum-rich inclusions (CAIs) were among the first igneous rocks produced within our solar system. These cm-sized spheres, which are found only in CV3 carbonaceous chondrites, have been the focus of much research (see a few years ago
The oxygen isotopic compositions of two calcium-aluminum–rich inclusions (CAIs) from the unequilibrated ordinary chondrite meteorites Quinyaie and Semarkona are en- riched in 16 O by an amount similar to that in CAIs from carbonaceous chondrites.
N2 - Wark-Lovering rims of six calcium-aluminum-rich inclusions (CAIs) representing the main CAI types and groups in Allende, Efremovka and Vigarano were microsurgically separated and analysed by neutron activation analysis (NAA).
Paquette, J., Engrand, C., & The COSIMA Team (2015). Searching for Calcium-Aluminum-Rich Inclusions in Cometary Grains with Rosetta/COSIMA.Poster presented at …
25/8/2000· 1. Science. 2000 Aug 25;289(5483):1330-3. Calcium-aluminum-rich inclusions from enstatite chondrites: indigenous or foreign? Guan Y(1), Huss GR, MacPherson GJ, Wasserburg GJ. Author information: (1)Department of Mineral Sciences, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560-0119, USA. . Lunatic Asylum, Division of Geological and Planetary …
Refractory calcium-aluminum-rich inclusions and aluminum-diopside-rich chondrules in the metal-rich chondrites Hammadah al Hamra 237 and Queen Alexandra Range 94411 Article Aug 2001
Isotopically uniform, 16O-depleted calcium, aluminum-rich inclusions in CH and CB carbonaceous chondrites Alexander N. Krota, , Kazuhide Nagashimaa, Michail I. Petaevb aSchool of Ocean and Earth Science and Technology, Hawai‘i Institute of Geophysics and Planetology, University of Hawai‘i at Ma¯noa, 1680
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract. Supernovae eject material into the interstellar medium that is highly hetero-geneous and highly non-solar in isotopic composition. In contrast, calcium-aluminum-rich inclusions
Calcium-aluminum-rich inclusions (CAIs) from carbonaceous chondrites have been studied intensely to determine physical conditions during the early history of our Solar System (MacPherson et aL, 1988; and references therein). Coarse-grained CAIs, those that
Calcium-Aluminum-rich Inclusions (CAIs), the oldest known solids of the solar system, show evidence for the past presence of short-lived radionuclide beryllium-10, which was likely produced by
21/3/2016· Abstract: Calcium, Aluminum-rich inclusions (CAIs) are the first forming solids of the Solar system. Their observed abundance, mean size, and mineralogy vary quite significantly between different groups of chondrites. These differences may reflect the dynamics and
Ca-Al-rich inclusions (CAIs) are centimeter-sized light-coloured calcium and aluminium rich inclusions found in carbonaceous chondrites. CAIs contains high-temperature minerals and are among the first solids which solidified from the cooling protoplanetary disk. CAIs were formed at much higher temperatures than the associated chondrules, and
A petrographic, chemical, and isotopic study of calcium-aluminum-rich inclusions and aluminum-rich chondrules from the Axtell (CV3) chondrite
of Korea Received 30 July 2015; accepted in revised form 6 May 2016; available online 13 May 2016 Abstract PLACs (platy hibonite crystals) and related hibonite-rich calcium-, aluminum-rich inclusions (CAIs; hereafter collectively referred to as have
The metal-rich chondrites Hammadah al Hamra (HH) 237 and Queen Alexandra Range (QUE) 94411, paired with QUE 94627, contain relatively rare (<1 vol%) calcium-aluminum-rich inclusions (CAIs) and Al-diopside-rich chondrules. Forty CAIs and CAI fragments and seven Al-diopside-rich chondrules were identified in HH 237 and QUE 94411/94627. The CAIs, 50-400 mum in apparent diameter, …
CALCIUM-, aluminum-rich inclusions in carbona- ceous chondrites have received much attention be- cause of their similarity to predicted refractory con- densates from the solar nebula (GROSSMAN, 1972, 1975; LA~IMER and GROSSMAN objects (LEE, 1979).
6/6/2017· The NWA 2364 meteorite contains the oldest known calcium-aluminum-rich inclusions in the Solar System. In other words, there is no “pristine” surviving matter within the sphere of human knowledge which is older than inclusions in this meteorite. Future discoveries
MICROSTRUCTURAL ANALYSIS OF A COMPACT TYPE-A CALCIUM-ALUMINUM RICH INCLUSION IN THE NORTHWEST AFRICA (NWA) 5028 CR2 CHONDRITE. T. Ramprasad1, P. Haene- cour2, T.J. Zega1,2.1Dept. of Material Science and Engineering, University of Arizona, Tucson, AZ 86719, USA.
Autor: Paquette, J. A. et al.; Genre: Zeitschriftenartikel; Im Druck veröffentlicht: 2016; Titel: Searching for calcium-aluminum-rich inclusions in cometary particles with …
A carbonaceous chondrite meteorite, whose white specks are calcium–aluminium-rich inclusions. American Museum of Natural History / CC BY-SA 3.0 Another way to make aluminum-26 is when cosmic rays , highly energetic charged particles, board other elements that might be present in a …
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